[sonorris]

I have this exact problem. I am guessing the power surge between closing one zone and opening another – at the same exact time – maybe causes the microcontroller to lock up. This has happened to me twice now in 2 weeks. I will change the program to include a few seconds between open / closes to see if that fixes it. Is the 7.5v power supply not enough to control the valves and run the os 3.0?

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